{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52948","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.371Z","datePublished":"2026-06-24T16:26:05.719Z","dateUpdated":"2026-06-29T04:18:39.866Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-29T04:18:39.866Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: dev: prevent integer overflow in I2C_TIMEOUT ioctl\n\nWhile fuzzing with Syzkaller, a persistent `schedule_timeout: wrong\ntimeout value` warning was observed, accompanied by SMBus controller\nstate machine corruption.\n\nThe I2C_TIMEOUT ioctl accepts a user-provided timeout in multiples of\n10 ms. The user argument is checked against INT_MAX, but it is\nsubsequently multiplied by 10 before being passed to msecs_to_jiffies().\n\nA malicious user can pass a large value (e.g., 429496729) that passes\nthe `arg > INT_MAX` check but overflows when multiplied by 10. This\nresults in a truncated 32-bit unsigned value that bypasses the\ninternal `(int)m < 0` check in `msecs_to_jiffies()`.\n\nThe truncated value is then assigned to `client->adapter->timeout`\n(a signed 32-bit int), which is reinterpreted as a negative number.\nWhen passed to wait_for_completion_timeout(), this negative value\nundergoes sign extension to a 64-bit unsigned long, triggering the\n`schedule_timeout` warning and causing premature returns. This leaves\nthe SMBus state machine in an unrecoverable state, constituting a\nlocal Denial of Service (DoS).\n\nFix this by bounding the user argument to `INT_MAX / 10`.\n\n[wsa: move the comment as well]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/i2c-dev.c"],"versions":[{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"e9ffd5f5050fbb199d270a85614cd27ebed6fbac","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"0b88ecfbc9dc33b4db8836c37b50cf174e6c0691","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"943e318eedbeaeea08ece3f5dd44c982f4ed2ef5","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"aa6ef734016912653a909477fb30aeb66c98b3a2","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"ff02add34ffd03449b8115904ebe2ec4fed022d4","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"ffbcf31f032eb454ebfd29309f51366fe57f4ac4","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"4576621dc6577f21a032acfd16c3ad61907a5ea7","status":"affected","versionType":"git"},{"version":"cd97f39b7cdf1c8a9c9f52865eec795b7f0c811d","lessThan":"617eb7c0961a8dfcfc811844a6396e406b2923ea","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/i2c-dev.c"],"versions":[{"version":"2.6.29","status":"affected"},{"version":"0","lessThan":"2.6.29","status":"unaffected","versionType":"semver"},{"version":"5.10.259","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.210","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.94","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.36","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.13","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e9ffd5f5050fbb199d270a85614cd27ebed6fbac"},{"url":"https://git.kernel.org/stable/c/0b88ecfbc9dc33b4db8836c37b50cf174e6c0691"},{"url":"https://git.kernel.org/stable/c/943e318eedbeaeea08ece3f5dd44c982f4ed2ef5"},{"url":"https://git.kernel.org/stable/c/aa6ef734016912653a909477fb30aeb66c98b3a2"},{"url":"https://git.kernel.org/stable/c/ff02add34ffd03449b8115904ebe2ec4fed022d4"},{"url":"https://git.kernel.org/stable/c/ffbcf31f032eb454ebfd29309f51366fe57f4ac4"},{"url":"https://git.kernel.org/stable/c/4576621dc6577f21a032acfd16c3ad61907a5ea7"},{"url":"https://git.kernel.org/stable/c/617eb7c0961a8dfcfc811844a6396e406b2923ea"}],"title":"i2c: dev: prevent integer overflow in I2C_TIMEOUT ioctl","x_generator":{"engine":"bippy-1.2.0"}}}}